Home / 13,977.92-20,972.64-10,298.72

Finding the Fourth Proportional to 13,977.92, 20,972.64 and 10,298.72

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Solution

The fourth proportional to 13,977.92, 20,972.64 and 10,298.72 is: 15,452.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,977.92 : 20,972.64 = 10,298.72 : x
  2. Step 2: Convert to fraction form
    13,977.92/20,972.64 = 10,298.72/x
  3. Step 3: Cross multiply
    13,977.92x = 20,972.64 × 10,298.72
  4. Step 4: Simplify right side
    13,977.92x = 215,991,347.02
  5. Step 5: Solve for x
    x = 215,991,347.02/13,977.92
  6. Step 6: Final answer
    x = 15,452.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.